/Engine/Plugins/Online/OnlineServices/Source/OnlineServicesCommon/Public/Online/OnlineAsyncOp.h
TOnlineChainableAsyncOp ( [TOnlineAsyncOp](API\Plugins\OnlineServicesCommon\Online\TOnlineAsyncOp)< OpType > & InOwningOperation, std::enable_if_t<!std::is_same_v< T, void >, T > & InLastResult )